Boiler-feeder



(NdMoael.)

J. DU BOIS.

BoILEE EEEEEE. No. 280,364. i Patented July 3, 1883.

UNITED lSTATES PATENT, OFFICE.

JosIAH s. DU Bois, or GAMDEN,` New Jnnsnv.

' Bomen-FEEDER.

SPECIFICATION formingvpart of Letters Patent No. 280,364, dated July 3, 1883.I

' Application filed September Q5, 1882. (No model.)

To @ZZ .whom t may concern.:

Be it known that I, JosIAn S. DU BoIs, of the city and county of' Camden, and State of New Jersey, have invented an Improvement in Boiler-Feeders, of which the following is a specification.

My invention has reference to steam-generators, but more particularly to the apparatus patented to me May 3, 1881, and No. 240,978; and it consists in an improvement thereon in the 'means of supplying the water to the generator, as will be more fully set forth in thefollowing specification, and shown in the accompanying drawings, which form part thereof.

The object of this invention is to supply a Vconstant stream of water to the generator under a practically uniform pressure and make the same self-feeding, thereby dispensing with a pumpand the mechanism necessary to run it.

In the drawings, Figure l is a sectional elevation of my steam-generator with `my improved means of supplying the feed-water thereto, and Fig. 2 is a modification of the supply-tank,

A is the brick-work of the generator.

B is the generating-cylinder, B the superheating and iilming cylinder, and B2 the superheating-cylinder.

D is the steam-dome or main supply-cylinder.

The cylinders B, B', and Bl are connected together and communicate together by pipes C.

The filmer, B carries an inner contained closed cylinder, F, with conical or tapering ends, to strain or film the steam which enters the superheater.. It is sustained in place by two rods or continuations from its ends, set rey. spectively into the heads of` the cylinders, as

shown.. y Any other shape of iilmer or strainer may be used, many different forms being shown in my patent referred to.

E is the grate.

G is the feed-pipe, and extends into the cylinder B, and is provided with a series of sprayingnozzles, the end of the 4pipe G being closed. Thispipe Gis provided with a valve, I, and communicates with the supply-pipe N, which opens into the water-tank J, preferably located at a considerable height. This tank .I is supplied with water from the hydrant-main by pipe M, having valve m. If it is placed at a sufficient height, gravity alone is all which iS required to. give the desired'pressure; but as 1tV 1s almost impossible to get the desired height in most buildings, I may provide theby weights L. The water-supply M discharges directly into the plunger K. As the plunger is descending it becomes full of water, and upon raising it up the water passes into the tank J through the valve S. By this means no time is lost in refilling the tank.. By using a lever a greater pressure can be obtained by less weights, the lever acting to force the piston down. yThe end of the supply-pipe N is extended, as at O, and provided with a dischargevalve, I?, and, if desired, the water may be iirst heated by passing from main N through coil G in the fine-box before being sprayed in the cylinder B.

This device for feeding water to the generator is particularly adapted to this class of machines, as more particularly set out in the patent to me previously referred to, since it enables an open communication to be kept con- 'stantly between the supply-tank 'and generator, the-pressure of the steam counterbalancing the pressure of the water and making the feed -water supply itself automatically. In practice the generator is made with a series of generating-cylinders, B, filming and super heating cylinder B, and superbeating-cylinder B3, and the filmer may be modified in construction.

In place of weights L, steam or air pressure may be used. y

I am aware of the patent to Bixler, No. 32,348, of 1861, and claim nothing therein set forth or claimed.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In combination with a steam generating or superheating cylinder, an inner contained closed cylinder of smaller diameter, and awa- IOO ter or steam supply pipe communicating or opening into the interior of said superheating- Cylinder, as shown at B, whereby the iiuid i11- troduced into said superheating` or generating cylinder can be rapidly heated While in a film or small volume as it passesthrough, with generating-eylin der B, a Water-supply pipe, G, pipe N, tank J, and a Weighted piston, substantially as described, to give a practically constant or uniform pressure to said feed-Water Without the use of a steam-pump, as and for the purpose specified.

2. In a steam-Generator, the combination of cylinders B, B', and B2, film-cylinder F, nozzles H, feed-pipe G, valve I, heating-coil G', grate E, water-supply pipe N, tank J, tankplunger K, with its valve S, water-pipe M, and means to raise or lower said plunger in its tank, substantiallyl as and for the. purpose specified.

3. In a steam-generator, the combination of generating-cylinder B with nozzles I-I, feed- Water in said stand-pipe over the gravitypressure, whereby the said feed-Water is fed to the boiler or generator under a practically constant pressure, substantially as and for the purpose specified.

In'testimony of which invention I hereunto set my hand.

JOSIAH S. DU BOIS.

Vitnesses:

R. M. HUNTER, ANDREW ZANE, J r. 

